diff options
Diffstat (limited to 'host/include/generic/host/atomic128-cas.h')
-rw-r--r-- | host/include/generic/host/atomic128-cas.h | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/host/include/generic/host/atomic128-cas.h b/host/include/generic/host/atomic128-cas.h deleted file mode 100644 index 6b40cc2..0000000 --- a/host/include/generic/host/atomic128-cas.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - * SPDX-License-Identifier: GPL-2.0-or-later - * Compare-and-swap for 128-bit atomic operations, generic version. - * - * Copyright (C) 2018, 2023 Linaro, Ltd. - * - * See docs/devel/atomics.rst for discussion about the guarantees each - * atomic primitive is meant to provide. - */ - -#ifndef HOST_ATOMIC128_CAS_H -#define HOST_ATOMIC128_CAS_H - -#if defined(CONFIG_ATOMIC128) -static inline Int128 ATTRIBUTE_ATOMIC128_OPT -atomic16_cmpxchg(Int128 *ptr, Int128 cmp, Int128 new) -{ - __int128_t *ptr_align = __builtin_assume_aligned(ptr, 16); - Int128Alias r, c, n; - - c.s = cmp; - n.s = new; - r.i = qatomic_cmpxchg__nocheck(ptr_align, c.i, n.i); - return r.s; -} -# define HAVE_CMPXCHG128 1 -#elif defined(CONFIG_CMPXCHG128) -static inline Int128 ATTRIBUTE_ATOMIC128_OPT -atomic16_cmpxchg(Int128 *ptr, Int128 cmp, Int128 new) -{ - Int128Aligned *ptr_align = __builtin_assume_aligned(ptr, 16); - Int128Alias r, c, n; - - c.s = cmp; - n.s = new; - r.i = __sync_val_compare_and_swap_16(ptr_align, c.i, n.i); - return r.s; -} -# define HAVE_CMPXCHG128 1 -#else -/* Fallback definition that must be optimized away, or error. */ -Int128 QEMU_ERROR("unsupported atomic") - atomic16_cmpxchg(Int128 *ptr, Int128 cmp, Int128 new); -# define HAVE_CMPXCHG128 0 -#endif - -#endif /* HOST_ATOMIC128_CAS_H */ |